EXHIBIT 11 OGDEN CORPORATION AND SUBSIDIARIES DETAIL OF COMPUTATION OF EARNINGS APPLICABLE TO COMMON STOCK FOR THE NINE MONTHS FOR THE THREE MONTHS ENDED ENDED SEPTEMBER 30, SEPTEMBER 30, ------------------- -------------------- 1997 1996 1997 1996 -------- -------- ------ ------- (In Thousands) NUMBER OF SHARES USED FOR COMPUTATION OF EARNINGS PER SHARE: Average number of common shares 49,951 49,642 50,048 49,705 ======= ====== ====== ====== NUMBER OF SHARES USED FOR COMPUTATION OF EARNINGS PER SHARE ASSUMING FULL DILUTION: Average number of common shares 49,951 49,642 50,048 49,705 Shares issuable for conversion of preferred stock 278 291 272 287 ------- ------- ------ ------- Number of shares used for computation 50,229 49,933 50,320 49,992 ======= ======= ====== ======= COMPUTATION OF EARNINGS APPLICABLE TO COMMON SHARES: Net income $55,391 $46,564 $24,605 $20,388 Less: dividends on Ogden preferred stock (115) (121) (38) (40) ------- ------- ------- ------- Consolidated income applicable to Ogden common stock $55,276 $46,443 $24,567 $20,348 ======= ======= ======= ======= COMPUTATION OF EARNINGS APPLICABLE TO COMMON SHARES-ASSUMING FULL DILUTION: Net income $55,391 $46,564 $24,605 $20,388 ======= ======= ======= ======= Note: Earnings per common share was computed by dividing net income, increased (decreased) for adjustments arising from minority interest in consolidated subsidiaries, reduced by preferred stock dividend requirements, by the weighted average of the number of shares of common stock and common stock equivalents, where dilutive, outstanding during each period. Earnings per common share, assuming full dilution, was computed on the assumption that all convertible debentures, convertible preferred stock, and stock options converted or exercised during each period, or outstanding at the end of each period were converted at the beginning of each period or at the date of issuance or grant, if dilutive. This computation provides for the elimination of related convertible debenture interest and preferred dividends.